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Digital Audio Denmark Presents THE ADDA 2408 A 24 bit 96 kHz AD/DA converter that provides features you have never imagined! Main Applications: ( A/D, D/A and D/D converter with Mic Preamp) Front-end for DAW systems, ProTools, Soundscape, Nuendo, Logic, and others

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slide1

Digital Audio Denmark PresentsTHE ADDA 2408

A 24 bit 96 kHz AD/DA converter that provides

features you have never imagined!

slide2

Main Applications:(A/D, D/A and D/D converter with Mic Preamp)

  • Front-end for DAW systems, ProTools, Soundscape, Nuendo, Logic, and others
  • Front-end for 8 channel Digital Tape recorders
  • Front-end for HD recorders
  • High quality front-end for digital consoles like the Yamaha O2R and DM 2000, Tascam DM 24, Sony DMX R100, Roland VS-2480, and others
  • Front-end in portable Post-production, Broadcast and Project recording applications
  • Digital front-end (stage boxes) via AES/EBU for PA systems with digital split functionality
  • D/A conversion with level adjustments for 5.1 applications
  • Format conversion between different digital audio formats
slide3

The ADDA 2408

The Most Transparent A/D and D/A Converter

  • Key Features:
  • - 8-channel 24 bit, 96 kHz A/D converter and D/D sample-rate / format converter
  • - A/D sampling with anti-AID filter for elimination of Alias Intermodulation Distortion
  • - Low noise microphone preamplifier with 0.5 dB gain control, phantom power +48V, and low cut filter
  • - Digital interfaces compatible with AES/EBU, S/PDIF, TDIF, ADAT and ProTools (more interfaces to come)
  • - A/D and D/D with phase inversion, and variable delay setting from 0 to 100ms (250 ms optionally)
  • - Psycho acoustic dither selectable for A/D and D/D inputs to 16, 18, 20 bit
  • - Build-in 8 channel digital mixer for monitoring of the A/D, D/D, or D/A input
  • - Monitoring in L/R or M/S stereo; optional DA outputs for 5.1 monitoring
  • - Solo monitoring for all channels
  • - 21 LED digital peak meter on all 8 channels, for monitoring either A/D, D/D, or D/A inputs
  • Sample-rates of 44.1kHz, 48kHz, 88.2kHz and 96 kHz. High-rates can be double wire or double speed
  • Synchronization alarm
  • 8 slots for expansion cards
  • Remote controlled via MIDI or USB
slide4

Fast & Easy To Use!

DA source button

Short cuts button for Input/monitor, Solo, Pan, Delay, Low cut, and Phase inversion.

Sample-rate, sync and dither buttons

Power button with Security locks, (the main power can only be turned off by a continuous 3 seconds press on the power button).

LCD display for all stereo channels.

Detailed 21 LED peak metering measuring the digital or analog input.

High quality analog headphone amplifier.

Level/data controls for all 8 channels.

AD-D source button for selection between the analog or digital inputs (2 channels at the time)

A/D-D/A and Systems button

All Primary functions available by pressing only one button!

slide5

Short Cuts

Input/monitor level

Solo

Pan

Delay

Low cut

Phase

Level/data knobs for the 8 channels

AD-DD and Monitor menu

The short cut buttons gives fast access to the primary functions of the AD-DD and Monitor menus.

The short cuts are only active when the short cut button is pressed. When releasing a short cut button the ADDA 2408 returns to the function prior to activating

If for instance the Mic gain in dB is selected and a short cut is activated the corresponding function may be adjusted using the Level/Data knob for one or more channels. By releasing the short cut button the ADDA 2408 returns to the Mic gain in dB function. It is therefore easy at all times to identify the active functions of the ADDA 2408..

It is recommended to set the ADDA 2408 into Mic gain in dB or Monitor level mode while recording.

slide6

AD-DD Source Button

AD-D source button

At the AD-DDsource button you can choose between the different analog or digital interfaces for two channels at the time.

The selected input will be available at all digital outputs with the sample-rate, dither and synchronization chosen at the Sample-rate, Dither and Sync buttons.

This way the unit can be either an A/D, a sample-rate or a format converter.

If the selected digital input has another sample-rate or synchronization than the sample-rate and synchronization chosen at the Sample-rate and Sync buttons the unit will auto-detect the difference and use the build in sample-rate converter automatically.

slide7

Precise Line Level Adjustment

Line level adjustment knobs

for all 8 input channels

Line level adjustment knobs

for stereo analog output

If another analog input level is required, the Mic input can be selected since this input will accept line levels as well.

The input line level is set in the System menu between +12 and +21 or +21 and 30 dBu. The precise adjustment is done at the line level adjustment knobs at the back panel.

The output line level can be adjusted at the back panel to a reference level for 0 dBFS between + 12 and + 27 dBu.

slide8

World-Class Mic Preamp

Gain adjustment knobs

for all 8 channels

Supreme quality Mic Pre amps with phantom power, low cut filter and phase inversion.

The Mic Preamp itself has a very low equivalent input noise at - 144 dB at +24 dB gain.

Analog gain can be added in steps of 3 dB. The following analog gain steps are available: -18, - 12 , -6, - 3, 0, + 3, + 6, + 9, + 12, + 15, + 18, + 21, and + 24 dB of analog gain, for at total of 42 dB analog gain adjustment.

This enables the user to scale any common microphone level properly into the 117dB dynamic range provided by the A/D converter.

In between the analogue gain step, the gain can be adjusted digitally in steps of 0.5 dB for a maximum of +72 dB gain.

The maximum input level is 24 dBu.

The input impedance is 15 k allowing the Mic Preamps to handle line signals as well.

slide9

Variable Delay Settings

Delay shortcut

AD-DD menu

Adjustment knobs for one or all 8 channels

A delay from 0 to 100 ms. (250 optional) can be added to all channel chosen at the AD-DD source button separately.

Use the Delay short cut or find the delay setting in the AD-DD menu. At the AD-DD menu the measuring of the of the Delay can be set to ms, meter or feet.

The main applications for the Delay settings are to bring a multi microphone set-up in correct phase.

Another application is to set the delay of the audio signal to match the video delay when mixing digital video.

slide10

The DA Source Button

DA source button

At the DA source button it is possible to choose the source for the D/A analog outputs.

Selection can be made between the outputs from the AD-DD converter, selected at the AD-DD button or directly from one of the digital inputs.

The input chosen at the DA source button will be used as the source for the monitor mixer, and if one or two expansion D/A card is mounted in the ADDA 2408, the selected signal will be present at these analog outputs as well, (a 4 channel D/A expansion card can be routed to channel 1-4, 3-6 or 5-8 in the System menu).

If you want to use the ADDA 2408 for monitoring 5.1, you have to install one 4 channel D/A expansion card. (Use the monitor mixer to route channel 1 and 2 to the analog stereo output and setup the D/A expansion card to monitor channel 3 to 6). The output level from the analog stereo output and the D/A expansion card can be adjusted in the Monitormenu, and at the Phones knob at the front panel.

slide11

The Monitor Mixer

The Monitor menu button

The monitor Mixer can be used to mix down the 8 channels ,chosen at the DA Source button, into a stereo mix.

At the Monitor mixer you can adjust output level, pan, solo, master level, solo level, and solo pre/post.

For two channel at the time (1/2, 3/4, 5/6, or/and 7/8) it is possible to chose between a normal L/R output or a MS decoding of the signal. The level for M and S can be adjusted at the Level/Data knobs.

The output level, pan, and solo functions can be reached at the short cuts. The master level can be adjusted at the Phones knobs.

The output from the monitor mixer will be available on the stereo XLR outputs at the back panel, and the Phones output at the front panel.

It is possible to change the left analog XLR output at the back panel into a digital AES output.

The monitor output of two or more ADDA 2408 can be linked together by connecting the AES output from one of the ADDA 2408 to the AES 11 sync input at another ADDA 2408 and so on.

slide12

Synchronization Options

The Sync button

The ADDA 2408 accepts external synchronization to the following sources: AES11, Word Clock, Video Clock or a digital input signal.

It is recommended to use the internal synchronization of the ADDA 2408 or a master studio clock at a similar quality as the synchronization source for the ADDA 2408.

The frequency used for the sampling will always be present as a Word Clock signal at the Word Clock output. This way the ADDA 2408 can be used as a synchronization converter between AES11, Super Clock, Video Clock, Digital input and Word Clock.

If a ProTools compatible I/O card is mounted in the ADDA 2408, synchronization can be made to Super Clock input, and a Super Clock output will also be available.

A PLL circuit is available for cleaning up minor errors (jitter) on the incoming sync signal.

Because of the very precise internal oscillators (5ppm) the ADDA 2408 can be used as a studio master sync generator.

slide13

Head Phone Amp

High quality analog headphone amplifier with 1/4 inch jack at the front panel. The source for the headphone output is the stereo mix from the monitor mixer. The headphone output level at the front panel and the stereo XLR line connectors at the back panel, may be adjusted individually or adjusted together at the level adjustment knobs at the front for the Head Phone output.

The head phone amplifier is powerful and capable of feeding up to 6 sets of 600  headphones with a high listening level.

slide14

Overview: The Menu Structure

The AD-DD button:

Line, Mic Gain in dB, or Digital input

Low cut

Phase inversion

Delay

The Restore button:

Restores all AD-DD and Monitor buttons settings to default values

The Monitor button:

Monitor Level in dB

Monitor pan

Monitor Solo

L/R or MS listening

Master Level /dB

Solo Level /dB

Solo Pre/Post

L/R or AES

Link L/R level to Phones

The Peak meter button:

AD-D source/DA source

Peak hold on/off

The System button:

Recall preset

Store preset

Delete preset

Delay measure: ms, meter, feet

Display contrast

I/O options

Unit ID

Clock sync output

Sync alarm on/off

Max Line level

Use the level/Data knobs for channel 7 & 8 and the Enter button in order to change the settings for the different menu's.

The LCD display for Channel 7 & 8 will show the settings for the different menu settings.

slide15

Advanced PC Program

All function can be remote controlled via USB or MIDI

slide16

The Back Panel

Line input level adjustment screw

Line output level adjustment screw

  • Interfaces:
  • 8-channel TDIF (double wire/speed - 1 slot)
  • 8-channel ADAT (1 slot)
  • ProTools TDM compatible 48 kHz interface (1 slot)
  • Separate stereo AES/EBU, stereo S/PDIF electrical and optical interface in/out (single wire - 2 slots)
  • Interfaces to come Q2l 2002:
  • 4-channel D/A interface (2 slots with XLR and 1 slots with Jack connectors) with digital and analog level adjustment. (Very useful together with monitor L/R output if the ADDA 2408 is used for monitoring 5.1. Two interfaces can be combined for full 8-channel D/A functionality ).
  • 8-channel AES/EBU input interface with XLR or BNC connectors (2 slots).
  • 8-channel AES/EBU output interface XLR or BNC connectors (2 slots).
slide18

Technical Specifications:

A/D CONVERSION, LINE INPUT

Resolution 24 bit

Sample-rates 44.1, 48, 88.2, 96 kHz

Dither Psycho acoustic, 16,18, 20 bit

Dynamic range (A) > 117 dB

THD+N (A) at +18 dBu, 20 dBu max < -100 dBfs

Cross talk < -115 dB

Input impedance > 15 kΩ

Max. input level +12 to 30 dBu, adjustable

Processing delay < 1.0 ms

Connectors XLR (pin 2 hot)

A/D CONVERSION, MIC. INPUT

Resolution 24 bit

Sample-rates 44.1, 48, 88.2, 96 kHz

Dither Psycho acoustic, 16,18, 20 bit

Dynamic range (A) > 117 dB

THD+N (A) at +18 dBu, 20 dBu max < -100 dBfs

Mic pre Equivalent Noise(A), +24 dB gain < -144 dB

Noise(A), 60dB gain (150Ω) < -126 dB

Cross talk < -120 dB

Input Impedance > 15 kΩ

Max. Input Level Mic (Balanced) + 24 dBu

Gain -18 to +90 dB

Freq. response deviation < 0,05 dB

Processing delay < 1.0 ms

Connectors XLR (pin 2 hot)

slide19

D/A CONVERSION, LINE OUTPUT

Resolution 24 bit

Sample-rates 44.1 to 100 kHz

Dynamic range (A) > 117 dB

THD+N (A) < -93dBr

Cross talk < -120 dB

Input Impedance < 40 Ω

Max. output Level Mic (Balanced) +12 to+27 dBu, adjustable

Processing delay < 1.0 ms

Connectors XLR (pin 2 hot)

D/D CONVERSION

Resolution 24 bit

Sample-rates 44.1 to 96 kHz

Dynamic range (A) > 133 dB

Processing delay < 1.8 ms

FREQUENCY RESPONSE A/D

Fs 44.1kHz, 18-18.3 kHz: ±0.1dB

Fs 48kHz, 18-20 kHz: ±0.1dB

Fs 88.2kHz, 18-36 kHz: ±0.1dB

Fs 96kHz, 18-39 kHz: ±0.1dB

Frequency response A/D. Stop-band attenuation 117 dB at half of the sampling freq..

FREQUENCY RESPONSE D/A

Fs 44.1kHz, 18-20.5 kHz: ±0.1dB

Fs 48kHz, 18-22.7 kHz: ±0.1dB

Fs 88.2kHz, 18-30.5 kHz: ±0.1dB

Fs 96kHz, 18-30.5 kHz: ±0.1dB

slide20

DIGITAL INPUTS AND OUTPUTS

Formats: AES/EBU, S/PDIF, Optical

ADAT, ProTools TDM

Ext. Sync input AES11, WordClock, VideoClock

Ext. Sync output WordClock, SuperClock

HEADPHONE AMPLIFIER

RMS output power (600W) 50 mW

Connectors ¼ " stereo phone jack

GENERAL

EMC complies with: EN 50082, and EN 50022

Operating Temperature: +5 to 45° C

Dimensions (w,h,d): 19", 2U, 275 mm

Weight: 5.8 kg

Mains Voltage: 95 to 240VAC

Power Consumption: 20 Watts

Due to our policy of continous improvement of our products, Digital Audio Denmark reserves the

right to make feature and specifications changes without notice.